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AS3900

Data Sheet - Contents

8.6.1 Procedure ................................................................................................................................................................................... 26

8.6.2 Master Initializes Pairing (wakeup) Procedure .......................................................................................................................... 27

8.7 Transmission Modes............................................................................................................................................................................... 30

8.7.1 Packet mode – Bidirectional – Timer Controlled......................................................................................................................... 31

8.7.2 Scan Procedure.......................................................................................................................................................................... 34

8.8 Data Frames........................................................................................................................................................................................... 36

8.8.1 Frame Structure for Timer Controlled Packet Mode .................................................................................................................. 36

8.8.2 Frame Structure for ACKNOWLEDGE (ACK) ............................................................................................................................ 36

8.8.3 Frame structure for ACKNOWLEDGE with appended data (ACP)............................................................................................. 37

8.8.4 Frame Structure for NOT-ACKNOWLEDGE (NAK).................................................................................................................... 37

8.8.5 Frame Structure for NOT-ACKNOWLEDGE and Data Retransmit (NAR) ................................................................................ 37

8.9 Configuration Registers.......................................................................................................................................................................... 37

8.9.1 Main Register Bank (ADDRESS 0x00 bit<0>=0)........................................................................................................................ 37

8.9.2 Shadow Register Bank (ADDRESS 0x00 bit<0>=1)................................................................................................................... 39

8.9.3 Detailed Description.................................................................................................................................................................... 39

8.10 Feature Description .............................................................................................................................................................................. 51

8.10.1 One Time Programmable Memory (OTP)................................................................................................................................. 51

8.10.2 Communication Error Counter (cesmax) .................................................................................................................................. 52

8.10.3 Cycle Time and Random Pointer.............................................................................................................................................. 52

8.10.4 Battery Level Indicator.............................................................................................................................................................. 53

8.10.5 Output Power Selection ............................................................................................................................................................ 53

8.10.6 RSSI ......................................................................................................................................................................................... 54

9 Application Information............................................................................................................................................................ 55

9.1 Microcontroller........................................................................................................................................................................................ 55

9.2 Crystal Oscillators................................................................................................................................................................................... 56

9.3 Power Supply ......................................................................................................................................................................................... 56

9.4 Antenna .................................................................................................................................................................................................. 56

9.5 Tuning Circuit.......................................................................................................................................................................................... 56

10 Package Drawings and Markings.......................................................................................................................................... 58

11 Ordering Information .............................................................................................................................................................. 59